Trinal Skill: In Another World With My Sword

On Year 2990, Supernatural Swords appeared on Earth and merged with humans. Unable to control the power urges within the swords, half of the humanity exploded and died out. The other half controlled and conquered the swords. Three years after the incident, finest scientists discovered a solution for sealing the wielder's power, all leaders around the World agreed and decided to accept it, but it only gave birth to rebels saying that the government just wanted to seal up peoples' power in order to command them easily. Thus World War 6 came upon and killed all humans except for one wielder.